AirHint found the following cheapest return flights from Sydney (SYD) to Bangkok (BKK) in September 2026 (see full year).

Return flights

01 Sep - 04 Sep	Scoot
02 Sep - 16 Sep	Scoot
06 Sep - 14 Sep	Scoot
01 Sep - 09 Sep	Scoot
01 Sep - 14 Sep	Scoot
04 Sep - 13 Sep	Scoot
02 Sep - 11 Sep	Scoot
02 Sep - 22 Sep	Scoot
10 Sep - 22 Sep	Scoot
13 Sep - 18 Sep	Scoot
16 Sep - 14 Oct	Scoot
30 Sep - 14 Oct	Scoot
25 Sep - 18 Oct	Scoot
19 Sep - 20 Oct	Scoot
18 Sep - 17 Oct	Scoot
24 Sep - 02 Oct	VietJet Air
26 Sep - 05 Oct	Scoot
24 Sep - 05 Oct	Scoot
27 Sep - 08 Oct	Scoot
28 Sep - 07 Oct	Scoot

Also check the deals for one-way flights from Sydney to Bangkok in September.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Sydney to Bangkok in September from $335

Return flights